Pasting comments made by Jan Martiska for 1157597 that apply to this BZ as well:
"Partially fixed in Hibernate 4.2.14.SP4-redhat-1 (EAP 6.3.2.CR2).
'Partially' means using Hibernate API directly, not using Entity Manager."
"Note that there is
configuration.setNamingStrategyDelegator(ImprovedNamingStrategyDelegator.DEFAULT_INSTANCE)
needed in order to activate the fix."
"BZ for Entity Manager fix https://bugzilla.redhat.com/show_bug.cgi?id=1158502"